Discovery of Acetohumulone and Acetolupulone a New Hop Alpha Acid and Beta Acid

Abstract Hops, Humulus lupulus, contain two major organic acids, humulones, also known as alpha acids, and lupulones, also known as beta acids. These two organic acids are composed of a mixture of three major homologs referred to as co-, n-, and ad-. There are also three minor homologs known as post-, pre- and adpre- however these minor hop acid homologs are found in dry hops at very low concentrations, usually less than 0.2%. Today, we report the discovery of a fourth minor homolog for alpha acids and beta acids found in hops called aceto-.